15-Letter Words Containing: F,A,R,R,E,D

• A device that uses diffraction (especially X-ray diffraction) to investigate the structure of matter.

• A heterocyclic ether having a five-membered ring with four carbon atoms and one oxygen; it is a colourless liquid with an ether-like smell, and is used as a polar solvent.

• arrange rocks in alternating strata

• (theology) being determined in advance; especially the doctrine (usually associated with Calvin) that God has foreordained every event throughout eternity (including the final salvation of mankind)